Compound antirecoil-spring.



0. N. BEAM.

COMPOUND ANTIRECOIL SPRING.

' APPLICATION HLE'D 1ULY1.19I8.

1 ,295,954; Patented Mar. 4,1919.

WI'TNESS: INVENTOR.

' QZzwer/Kfiea 71.

A TTORNEY.

- 1 M t I y fr. lll lll hill Pfiillllllll F LGS ANGELES, CELLIFGEEIA.

GGEJEEOUND ANTIRECOIL-SPEING.

Specification of Letters Patent.

Application filed July 1, 1913. Serial No. 22,805.

T0 aZZ whom it may concept:

e it known that I, OLIVER N. BEAM, a citizen of the United States, residing at Los Angelcs, in the county of'Los Angeles and State of California, have invented new and useful Improvements in Compound Anti-.

iecoiLSprings, of which the following is a specification.

My object is to make a compound antirecoil spring and my invention consists in the novel features herein shown, described and claimed.

Figure 1 is an elevation showing the leaves of one form of spring embodying the principles of my invention before the springs are diaWn together.

2 is an elevation of the spring with the leaves drawn together ready tor use.

Fig; 3 is a. view analogous to Fig. 2 and showing amodified construction.

Fig. 4 shows s second modification.

The normal spring leaves 1, 2, 3 and t in Figs. 1 and-2 are of the. usual construction and the tensions of these leaves are all in one direction. placing a resisting spring leaf 5 in combination with the normal spring leaves. lhe resisting spring leaf 5 may be made straight or it' naybeopposicely curved to any do sired extent and then when the leaves are tube assembled the resisting spring leaf 5 1s =.-prefcrably placed against the lower or Eli or r face of the leaf 1, and the leaves 2, 3 4c are arranged successively, as is usual. Th en the leaves are pressed together against the tension of the, resisting spring lest? 5 and the bolt 6 or other suitable as tithing; applied to hold the leaves together at t eir centers, and clips 7 end 8 are ap plied to hold the ends of the resisting spring leaf 5 to the ends of the normal spring leaf 1. lthe tension of the resisting spring leaf 5 being exerted in an opposite direction ircrn the tensions of the normal spring lcsvesl, 2, 3 and servcs to hold the completed spring under tension to prevent its full enpan ion and to resist the rebound. ffiien'a l is up as in Fig. 2 with the ends of n r 1 ing leavcs, 2, 3 and i'anettacheu to ti sp 1 g lest i the resin spring lest 1 must be strong enough to resist the rebound unassisted by the other Elli lesves, and it frequently happens that they the main spring leaf '1 materially strengthen lvly invention consists '111 the main spring leaf and reduce the liability the rebound to a minimum.

In the modification shown in Fig. 3 the spring is made up of the normal leaves 9, 10, l1, l2, l3 and 14: in the usual way. A longer bolt 15 is supplied and the resisting spring leaf 16 is secured in place by the bolt 15 agsinst the outer face of the leaf 14 and against the outer faces of the ends of the leaves 13, 12, 11 and 10, and clips 17 end 18 secure the ends of the resisting sprin leaf 16 to the ends of the main spring lee? 9. In this construction the strain of the rebound is transmitted from the ends of the main spring 9 through the clips 17 and 18 to the resisting spring leaf 18 and from the resisting spring leaf 16 to the ends of the normal leaves 10, 11, 12, 13 and 14:, thereby Patented m e, rose.

making it practically impossible to-break the 32, the nori'nal spring leaves 33, 34 and 35, the resisting spring leaf 36, and the clips 37 and 38 connecting the ends of the resisting spring leaf 36 to the ends of the main spring leaf The effect of this construction is substantially the same as the construction shown in Fig. 3, that is, the resisting spring leaf 3G is connected to the ends of the main spring lest to hold the normal leavesunder tension and to reinforce the main spring leaf 32 to prevent breaking the main spring lost by the rebound. The resisting spring leaf 36 also ties the ends ofthe normal spring leaves 33. 34 and 35 to the main spring leaf 32. The leaves are all connected by a central bolt 39.

It is obvious that instead of the bolt 6 in Fig. 2, or the bolt 15 in Fig. 3, or'the bolt 39 in Fig. 4, any of the usual forms of U-bolt clips may be used.

It is obvious that when the springs are in action, the resisting spring leaf 5 in Fig. 2, or 16 in Fig. 3, or 36 in Fig. 4: must rcciprocatc or slide relative to the main spring leaves and that the clips 7 and 8, 17 and 18, and 37 and 38 must provide for this action.

Thus I have produced a compound antirecoil spring comprising the combination with normal spring leaves, of a resisting spring'lcnf, the resisting spring leaf servmg to hold the normal spring leaves under tension and serving to strengthen the normal spring leaves and prevent breaking upon '4 the spring consists of the main spring leaf I propose to make the resisting spring leaves and clips accessories or attachments to be applied to springs already in use orto new springs of the ordinary construction.

By resisting spring leaf 1 mean a reverse spring leaf. a supplemental spring leaf, or a counter-spring leaf, or a controlling spring leaf having a tension in oppositionto the tension of the main spring so as-J o resist to the extent of its strength or tension the normal action of the main spring.

In the action of leaf springs when weight is applied the shock or force is conveyed from the center or support to the ends or end in the form of a wave. When a heavy engine is moving along a railroad track, you

can see the wave caused by the weight of the engine traveling ahead of the engine and either the force of the Weight or the force of the rebound travels along a spring in. the same way. In order to control this wave to the fullest extent in a spring I have applied the resisting spring to come into contact with the main spring throughout its full active length so as to absorb the wave equally the full length of the main sprin Various changes may be made without departing from the spirit of my invention as claimed.

I claim:

T he combination with a normal convexed leaf spring of a resisting spring leaf against the convex side of and in contact with the normal leaf spring throughout its active length. the tension of'the resistin leaf spring being in opposition to the tension. of the normal leaf sp'ing, means connecting the center of the resisting spring leaf to the center of the normal. leaf spring, and clips connecting the ends of the resisting spring leaf to the ends of the normal leaf spring.

In testimony whereof I have signed my name to this specification.

OLIVER N. BEAM. 

